Idle Transfiguration in bleach

Gabriel was just an average guy until one day, his life was abruptly taken from him. Desperate to live, he found himself consumed by despair, transforming him into something dark—a hollow. Follow him on his journey as he navigates the cold world of Hueco Mundo. He refuses to be devoured; he will not allow the same mistake to happen again. He will grow stronger and strive to become the strongest. He shall become the king. — Description from novelcodex.org